A corpo



w. s. MAYER. LIGHT FOCUSING MECHANISM.

APPLICATION FILED SEPT. 9, I918.

Patented July 26, 1921.

3 SHEETS-SHEET 1.

Walter J Mayer,

A TTOR/VEY W. S. MAYER.

LIGHT FOCUSING MECHANISM.

APPLICATION FILED sEPm. 1918.

1,385,697. Patented July 26, 1921.

3 SHEETS-SHEET 2.

INVENTOH: Walter J Ma er,

,4 TTOR/VEY W. S. MAYER.

LIGH T FOCUSING MECHANISM- APPLICATION FILED SEPT-9. I918 1,3 5,697, I Patented July 26,1921.

3 SHEETS-SHEET 3.

IIWf/VTORA Afro/em.

[UN TE sr'rs- PATENT OFFICE.

WAIQ'TEE s. M YER, 0 PHILADELPHIA, PENNSYLVANIA, ASSIGNOR T0 ELECTRIC SERVICE SUPPLIES ooMPANY, 0E PHILADELPHIA, PENNSYLVANIA, A CORPO- RATION or PENNSYL ANIA.

V LIGHT-FOCU'SlLNG ISM.

To aZlw/iom it may concern-f Be it known that I, WALTER S. MAYER, a citizen of theUnited States, residing in the city of Philadelphia, county of Philadelphia, and State of Pennsylvania, have invented certain Improvements in Light-Focusing lVlechanism, of which the following is a specification, s

invention is designed to provide improved supporting means of stable character adapted for quickly, simply and accurately f Cllsing alamp with relation to a reflector, a primary object'being to eflect'adesired universal movement by adjusting means adapted to be supported in a desiredmanner.

lhe improvedmeans comprise, in their preferred form,.a frame provided with bearings adapted to be fixed ,to a support in various angular positions withfr'elation to its axis and the axis of the reflector, a lamp 7 socket holder having trunnions adapted to.

rock and move axially said bearings with I provision for passing conducting wires through a trunnion, means for moving and setting said holder angularly, means for movlng andsettlng said holder transversely to the plane of its angular movement and means for moving a lamp socket along the axi'sof said holder and for setting said socket in the line vof its axis in the intersection of said planes. The frame may be carried by various-means as a plate back of i the refiectoror pedestah forms of the invention,-

The nature of the improvements will 'be fauyunderstoed from the following descrip tion and drawings of mechanism illustrating In the drawings, Figure 1 is an elevation of aforn of, mechanism embodying the in vention with the. supporting means and reflectorshown inbroken section; Fig. 2 is a rear-elevation ofthe same with the reflector and; supporting, means removed; Fig. 3 isja bottom planeview oif thef structure shown in Fig, 2 Fig. 4 is'a; broken front elevation of a niodifiedconstruction embodying ajsupporting pedestal;"Fig; 5 is a part sectional side elevationqof the construction shown in Eigkft, and fig. 6 -is a broken part-sectional. view -taken through the axis of-the lamp socket in illustration of details of the con- 1 Specification of Letters Patent. Patented J uly 26', 1921.

Appli ation filed September 9, 1918; Serial No. 253,278 V .ingthe aperture 5, has the part 1 fixed thereto by bolts 6 passing through the lugs 2 and 1 the-support.

A lamp socket holder 7 is provided with the trunnions 8 and 9, the former being jour naled in one of thebearings 3 and the'latter having a threaded engagement with a nut 10 provided with a reduced cylindrical section 10 journaled in the bearing 3 the nut having the knurled head 10 for turning it to effect the lateral movement of the. holder along the axis of the trunnions. Journal caps 3 are hinged to the respective bearings 3, one adapted to be clamped against angular and lateral movement and the other being held against its bearings by the screw 11" and in engagement with the reduced section 10 of the nut 10 to prevent the longitudinal movement of the latter when turned.

A bolt 12 is fixed to a cross head or bar 12'. which is-journaled in the bearings 1-. This bolt has a threaded engagement with a nut 13 which isprovided with a reduced cylindrical section 13' adapted to turn in a, collar or bearing 14, the nutfhaving a 'knurledhead 13 for turning it.

part 14 v1n thelateral movement of the holder; N

A bolt 16 is movable longitudinally in the holder 7 by a nut17which is journaled in the bearing 7, the bolt being pivotally connected through apin 18 with the lamp socket '19. The socket 19 is telescoped in the holder and [movablelongitudinally therein by i I turningthe nut1 7, the socket being pro- 'vided with 'lu'gs19" which are guided in ways 7 formed in the holder. A lock nut engages the bolt 16 and is adapted for clamping the nut 17 to fix the socket-l9, and the lamp 21 carried thereby when the. desired longitudinal adjustment has been effected. 1

The reflector-.22, containing the axial open-5 ing22' for the free movement of the socket holder 7, has the lamp 21 focused withre- ,lation thereto by the described universal adjustments, whereby the holder with'the lamp held thereby is adapted to beoscillated, to be moved in a plane transverse'to its plane of oscillation, and to be adjusted along" the intersectionof said planes. The conduct I duced portion 1 and the shoulder 1.

base 2" is'fixed to the ringl', and on asta'nd I orpedestal 25by bolts '26. A reflector 27 isprovided at its apex withan openin 27 inwhich the part 1 fits, the reflector earing against the shoulder-.1 where it can be secured as by solder. An angle plate or brace 28 is secured to the reflector 27. and the base 2', being detachably engaged to the latter bv a bolt 26.

turning the swiveled nut 13'onthe'bolt '12,

The stand 25 carries the bolts ea ith'the sockets 3O thereon for holding ends of the means, of a holder provided with means conwires 23, the bolts and sockets being electrically eparated from the stand by the in} sulators 31 and electrical connections being made with the 'bolts through the binding means .32 thereon. v y As in the previously described' construction, the lamp 21 is carried by asocket' 19 which is movable longitudinalli'n the holder 7 by 'the action of the 'swiveled'nut 17 on the bolt 16, the holder is rockedin the bearings 3 by loosening the screw "11 and'by and the revolution of the nut 510 on thetrunmom 9 movxes the holder laterally.

The wires '23 pass from the binding screws 24 and 24' through the hollow trunnion 58.

' '-'.The socket 19'is provided with the resilient tongues 19.", cut outof its threaded conducting shell ;19", which grip the lamp, and with. resilient tongue. 19*, connected with the binding screw 24', which presses against the rear of the lamp, whereby the latter is held firmly in its socket, the parts 19" and19" being in circuit with the lampfilament. llaving described my invention, I claim, I QILIn a light jfocusingdevicefthe combi- .iiet bn w bearing means, ,of a holder,

means to have. an oscillatory and longitudiinalmovement relative to said bearing means whereby said holder is adapted to be moved 4am 5, the frame gagementwi'th said nut, is movable laterally;

angularl about an axis, and transversely along said axis and means for moving said holder in a line transverse to said axis '2 In a light. focusing device, the combination withibeari g of a holder; means for conneeting said holder with saidbearing means in turning relation and'i'for adjusting it along'the axis about which it turns whereby said holder can be oscillated in dif;

holder is adapted to-be adjusted laterally along the axis of saidmember and with'relation to said axis. V 4. In a light focusing device,-a bear1ng,

n ar y lamp holding means having a laterally ex tending threaded member, and a coupling v unit j ournaled relatively to said bearing and adapted to turn on said threaded member.

' 1 In a light focusing device, the combi nation with-a {frame provided with bearing means, ofa holder provided with means eon:

necting it with'said bearing means in been:

latory and j'laterally "movable relation, and means comprising atbolt connecting said frame 'with ,said jholder to adjust-the latter ang larly.

'1 6. In a Iightjfoc'using deviftheeambination {with a. frame providedffwith bearing necting it with said bearing means inosciL latory and laterally movable relation ahm the latter isad-justable longitudinally. -7. In a light focusing device,- the.'combi-"- nation with a -frame.-provided with bea'rsad o e i nn o s up brt ed. in journaled relation to said bearing's whereby it is adapted-tooscillate, means gf'or moving said trunnions longitudinall re lationj'to said bearings whereby'isai "holder is adapted V to be "moved .laterally, a lamp socket carried by said holder, and means for adj ustingfsaidf lamp IS ket longitudinally.

. 8. In a light focusing device the combione of said bearings comprising abut journaled and'held, again st, longitudinal I movement', of a holder having trunniot i supported iii-T journaledrelation to; said; .{bear1i1g s nation with a 'frame-"providediwlth bearings,

oneof said trunnions having aithreaded-feniwhereby said holder 1;"?9. In 'a light'focusing-device, the combi nation with a frame provided with 1 of a ,holderhavingi trunnions suppo'rtedfin "if -journaled' relation to-said beari v for moving said'trunnions longitudinally I it is adjusted;

with relation to said bearings and means for fixing said holder in the position towhich 10. In a lightlfocusing device, the combination with a frame provided with bearings, of a holder having trnnnions journaled and movable longitudinally with relation to said bearings, a bolt connected in oscillatory relation tosaid frame, a nut engaging saidbolt, and a pintle connected'with said holder in parallel relation to'said trunnio'Iis whereby said holder is adapted to rock and move laterally with relation to said nut.

v 11. In a light focusing device, the combi-f nation with a spider adapted to be clamped against a support, said spider having bearings thereon, of a holder extending through said spider, said holder having trunnions journaled and movable longitudinally ,with relation to said bearings, a lamp socket movable longitudinally in said holder, a bolt connected with said socket, and means connect-' ing said bolt with said holder for effecting the longitudinal movement therein of said socket.

12. In a light focusing device, the combination with a frame, of a holder having trunnions journaled on said frame, a lamp socket provided with terminals carried by.

said holder, and conducting means connectedwith a terminal or terminals aforesaid and passing through a trunnion aforesaid.

and passing through one of said trunnions.

In testimony whereof I have hereunto set my name this 29 day of August, 1918.

WALTER S. MAYER. 

